package enums

// FailureReason 失败原因枚举
type FailureReason string

const (
	// === 企业信息验证失败原因 ===
	FailureReasonEnterpriseNotExists     FailureReason = "enterprise_not_exists"     // 企业不存在
	FailureReasonEnterpriseInfoMismatch  FailureReason = "enterprise_info_mismatch"  // 企业信息不匹配
	FailureReasonEnterpriseStatusAbnormal FailureReason = "enterprise_status_abnormal" // 企业状态异常
	FailureReasonLegalPersonMismatch     FailureReason = "legal_person_mismatch"     // 法定代表人信息不匹配
	FailureReasonEsignVerificationFailed FailureReason = "esign_verification_failed" // e签宝验证失败
	FailureReasonInvalidDocument         FailureReason = "invalid_document"         // 证件信息无效

	// === 合同签署失败原因 ===
	FailureReasonContractRejectedByUser FailureReason = "contract_rejected_by_user" // 用户拒绝签署
	FailureReasonContractExpired        FailureReason = "contract_expired"         // 合同签署超时
	FailureReasonSignProcessFailed      FailureReason = "sign_process_failed"      // 签署流程失败
	FailureReasonContractGenFailed      FailureReason = "contract_gen_failed"      // 合同生成失败
	FailureReasonEsignFlowError         FailureReason = "esign_flow_error"         // e签宝流程错误

	// === 系统错误原因 ===
	FailureReasonSystemError    FailureReason = "system_error"    // 系统错误
	FailureReasonNetworkError   FailureReason = "network_error"   // 网络错误
	FailureReasonTimeout        FailureReason = "timeout"         // 操作超时
	FailureReasonUnknownError   FailureReason = "unknown_error"   // 未知错误
)

// AllFailureReasons 所有失败原因列表
var AllFailureReasons = []FailureReason{
	// 企业信息验证失败
	FailureReasonEnterpriseNotExists,
	FailureReasonEnterpriseInfoMismatch,
	FailureReasonEnterpriseStatusAbnormal,
	FailureReasonLegalPersonMismatch,
	FailureReasonEsignVerificationFailed,
	FailureReasonInvalidDocument,
	
	// 合同签署失败
	FailureReasonContractRejectedByUser,
	FailureReasonContractExpired,
	FailureReasonSignProcessFailed,
	FailureReasonContractGenFailed,
	FailureReasonEsignFlowError,
	
	// 系统错误
	FailureReasonSystemError,
	FailureReasonNetworkError,
	FailureReasonTimeout,
	FailureReasonUnknownError,
}

// EnterpriseVerificationFailureReasons 企业验证失败原因列表
var EnterpriseVerificationFailureReasons = []FailureReason{
	FailureReasonEnterpriseNotExists,
	FailureReasonEnterpriseInfoMismatch,
	FailureReasonEnterpriseStatusAbnormal,
	FailureReasonLegalPersonMismatch,
	FailureReasonEsignVerificationFailed,
	FailureReasonInvalidDocument,
}

// ContractSignFailureReasons 合同签署失败原因列表
var ContractSignFailureReasons = []FailureReason{
	FailureReasonContractRejectedByUser,
	FailureReasonContractExpired,
	FailureReasonSignProcessFailed,
	FailureReasonContractGenFailed,
	FailureReasonEsignFlowError,
}

// SystemErrorReasons 系统错误原因列表
var SystemErrorReasons = []FailureReason{
	FailureReasonSystemError,
	FailureReasonNetworkError,
	FailureReasonTimeout,
	FailureReasonUnknownError,
}

// IsValidFailureReason 检查失败原因是否有效
func IsValidFailureReason(reason FailureReason) bool {
	for _, validReason := range AllFailureReasons {
		if reason == validReason {
			return true
		}
	}
	return false
}

// GetFailureReasonName 获取失败原因的中文名称
func GetFailureReasonName(reason FailureReason) string {
	reasonNames := map[FailureReason]string{
		// 企业信息验证失败
		FailureReasonEnterpriseNotExists:     "企业不存在",
		FailureReasonEnterpriseInfoMismatch:  "企业信息不匹配",
		FailureReasonEnterpriseStatusAbnormal: "企业状态异常",
		FailureReasonLegalPersonMismatch:     "法定代表人信息不匹配",
		FailureReasonEsignVerificationFailed: "e签宝验证失败",
		FailureReasonInvalidDocument:         "证件信息无效",
		
		// 合同签署失败
		FailureReasonContractRejectedByUser: "用户拒绝签署",
		FailureReasonContractExpired:        "合同签署超时",
		FailureReasonSignProcessFailed:      "签署流程失败",
		FailureReasonContractGenFailed:      "合同生成失败",
		FailureReasonEsignFlowError:         "e签宝流程错误",
		
		// 系统错误
		FailureReasonSystemError:  "系统错误",
		FailureReasonNetworkError: "网络错误",
		FailureReasonTimeout:      "操作超时",
		FailureReasonUnknownError: "未知错误",
	}

	if name, exists := reasonNames[reason]; exists {
		return name
	}
	return string(reason)
}

// GetFailureReasonCategory 获取失败原因分类
func GetFailureReasonCategory(reason FailureReason) string {
	categories := map[FailureReason]string{
		// 企业信息验证失败
		FailureReasonEnterpriseNotExists:     "企业验证",
		FailureReasonEnterpriseInfoMismatch:  "企业验证",
		FailureReasonEnterpriseStatusAbnormal: "企业验证",
		FailureReasonLegalPersonMismatch:     "企业验证",
		FailureReasonEsignVerificationFailed: "企业验证",
		FailureReasonInvalidDocument:         "企业验证",
		
		// 合同签署失败
		FailureReasonContractRejectedByUser: "合同签署",
		FailureReasonContractExpired:        "合同签署",
		FailureReasonSignProcessFailed:      "合同签署",
		FailureReasonContractGenFailed:      "合同签署",
		FailureReasonEsignFlowError:         "合同签署",
		
		// 系统错误
		FailureReasonSystemError:  "系统错误",
		FailureReasonNetworkError: "系统错误",
		FailureReasonTimeout:      "系统错误",
		FailureReasonUnknownError: "系统错误",
	}

	if category, exists := categories[reason]; exists {
		return category
	}
	return "未知"
}

// IsEnterpriseVerificationFailure 判断是否为企业验证失败
func IsEnterpriseVerificationFailure(reason FailureReason) bool {
	for _, verifyReason := range EnterpriseVerificationFailureReasons {
		if reason == verifyReason {
			return true
		}
	}
	return false
}

// IsContractSignFailure 判断是否为合同签署失败
func IsContractSignFailure(reason FailureReason) bool {
	for _, signReason := range ContractSignFailureReasons {
		if reason == signReason {
			return true
		}
	}
	return false
}

// IsSystemError 判断是否为系统错误
func IsSystemError(reason FailureReason) bool {
	for _, systemReason := range SystemErrorReasons {
		if reason == systemReason {
			return true
		}
	}
	return false
}

// GetSuggestedAction 获取建议的后续操作
func GetSuggestedAction(reason FailureReason) string {
	actions := map[FailureReason]string{
		// 企业信息验证失败
		FailureReasonEnterpriseNotExists:     "请检查企业名称和统一社会信用代码是否正确",
		FailureReasonEnterpriseInfoMismatch:  "请核对企业信息是否与工商登记信息一致",
		FailureReasonEnterpriseStatusAbnormal: "请确认企业状态正常，如有疑问请联系客服",
		FailureReasonLegalPersonMismatch:     "请核对法定代表人信息是否正确",
		FailureReasonEsignVerificationFailed: "请稍后重试，如持续失败请联系客服",
		FailureReasonInvalidDocument:         "请检查证件信息是否有效",
		
		// 合同签署失败
		FailureReasonContractRejectedByUser: "您可以重新申请签署合同",
		FailureReasonContractExpired:        "请重新申请签署合同",
		FailureReasonSignProcessFailed:      "请重新尝试签署，如持续失败请联系客服",
		FailureReasonContractGenFailed:      "系统正在处理，请稍后重试",
		FailureReasonEsignFlowError:         "请稍后重试，如持续失败请联系客服",
		
		// 系统错误
		FailureReasonSystemError:  "系统暂时不可用，请稍后重试",
		FailureReasonNetworkError: "网络连接异常，请检查网络后重试",
		FailureReasonTimeout:      "操作超时，请重新尝试",
		FailureReasonUnknownError: "发生未知错误，请联系客服",
	}

	if action, exists := actions[reason]; exists {
		return action
	}
	return "请联系客服处理"
}

// IsRetryable 判断是否可以重试
func IsRetryable(reason FailureReason) bool {
	retryableReasons := map[FailureReason]bool{
		// 企业信息验证失败 - 用户数据问题，可重试
		FailureReasonEnterpriseNotExists:     true,
		FailureReasonEnterpriseInfoMismatch:  true,
		FailureReasonEnterpriseStatusAbnormal: false, // 企业状态问题，需要外部解决
		FailureReasonLegalPersonMismatch:     true,
		FailureReasonEsignVerificationFailed: true, // 可能是临时问题
		FailureReasonInvalidDocument:         true,
		
		// 合同签署失败
		FailureReasonContractRejectedByUser: true,  // 用户可以改变主意
		FailureReasonContractExpired:        true,  // 可以重新申请
		FailureReasonSignProcessFailed:      true,  // 可能是临时问题
		FailureReasonContractGenFailed:      true,  // 可能是临时问题
		FailureReasonEsignFlowError:         true,  // 可能是临时问题
		
		// 系统错误 - 大部分可重试
		FailureReasonSystemError:  true,
		FailureReasonNetworkError: true,
		FailureReasonTimeout:      true,
		FailureReasonUnknownError: false, // 未知错误，不建议自动重试
	}

	if retryable, exists := retryableReasons[reason]; exists {
		return retryable
	}
	return false
}

// GetRetrySuggestion 获取重试建议
func GetRetrySuggestion(reason FailureReason) string {
	if !IsRetryable(reason) {
		return "此问题不建议重试，请联系客服处理"
	}

	suggestions := map[FailureReason]string{
		FailureReasonEnterpriseNotExists:     "请修正企业信息后重新提交",
		FailureReasonEnterpriseInfoMismatch:  "请核对企业信息后重新提交",
		FailureReasonLegalPersonMismatch:     "请确认法定代表人信息后重新提交",
		FailureReasonEsignVerificationFailed: "请稍后重新尝试",
		FailureReasonInvalidDocument:         "请检查证件信息后重新提交",
		FailureReasonContractRejectedByUser:  "如需要可重新申请合同",
		FailureReasonContractExpired:         "请重新申请合同签署",
		FailureReasonSignProcessFailed:       "请重新尝试签署",
		FailureReasonContractGenFailed:       "请稍后重新申请",
		FailureReasonEsignFlowError:          "请稍后重新尝试",
		FailureReasonSystemError:             "请稍后重试",
		FailureReasonNetworkError:            "请检查网络连接后重试",
		FailureReasonTimeout:                 "请重新尝试操作",
	}

	if suggestion, exists := suggestions[reason]; exists {
		return suggestion
	}
	return "请重新尝试操作"
}